High Quality Content by WIKIPEDIA articles! The Association of Greater Manchester Authorities (AGMA) is the local government association for Greater Manchester, a metropolitan county in North West England. It was established in 1986 as a voluntary organisation to represent the ten district councils of Greater Manchester after the Greater Manchester County Council was abolished. AGMA develops policy, lobbies government and others, and runs a range of services designed to make strategic and tangible advances in the standard of living across Greater Manchester. Its Policy and Research Unit is based in Wigan, and its European Union office in Brussels, Belgium.